Simultaneous Nadir Overpasses (SNOs) between FY3D and LANDSAT-8
TLE Epoch: 2020 6 23.  Predictions up to the next  14.0 days:

     Date     Time(FY3D) FY3D Lat/Lon Date Time(LANDSAT-8) LANDSAT-8 Lat/Lon    Distance(km)  Time Diff(sec)
 06/24/2020   03:32:41   (  71.42, 122.38) 06/24/2020   03:33:48  (  71.32, 124.73)   84.28                67
 06/24/2020   04:23:08   ( -70.56, -68.85) 06/24/2020   04:23:30  ( -70.55, -68.83)    1.07                22
 06/24/2020   05:13:52   (  70.48,  98.60) 06/24/2020   05:12:57  (  70.46,  98.67)    3.35                55
 06/26/2020   20:39:31   ( -70.59,  47.01) 06/26/2020   20:39:59  ( -70.58,  47.09)    3.23                28
 06/26/2020   21:30:14   (  70.46,-145.47) 06/26/2020   21:29:26  (  70.48,-145.42)    2.93                48
 06/29/2020   12:55:54   ( -70.57, 162.95) 06/29/2020   12:56:30  ( -70.55, 162.92)    2.68                36
 06/29/2020   13:46:37   (  70.45, -29.54) 06/29/2020   13:45:57  (  70.45, -29.59)    1.74                40
 07/02/2020   05:12:17   ( -70.56, -81.12) 07/02/2020   05:13:00  ( -70.58, -81.17)    2.65                43
 07/02/2020   06:03:01   (  70.49,  86.30) 07/02/2020   06:02:27  (  70.47,  86.32)    2.61                34
 07/04/2020   21:28:41   ( -70.60,  34.74) 07/04/2020   21:29:30  ( -70.60,  34.74)    0.31                49
 07/04/2020   22:19:24   (  70.48,-157.77) 07/04/2020   22:18:57  (  70.49,-157.77)    0.49                27